I need to replace a bathroom light on a pull cord and here's the problem.. The ceiling hole for the light has 3 Red, 3 Black and 3 Yellow/Green wires. Each time I have tried to wire up to the light instructions provided the fuse blows. Once wired and I put the fuse back in, the light is on. As soon as I pull the cord to switch off, the light goes out and the fuse (in the fuse box) blows taking all the downstairs lights with it. The bulbs don't blow and as soon as the fuse wire is replaced all is fine again.. I am told that there is a certain combination of wiring that will solve this and that this involves mixing some of the red/black wires? Can anyone help?

Paul Fox, May 2008

need to replace a pull cord light its old wireing red and black ... the box it self has l1 and l2 which goes where

nicki, July 2009

One of the black wire's is the switch live wire and should have some red tape on it.

so...

All yellow greens together
All reds together
2 black together and to black/blue of light
1 black with red tape to red/brown on light

You need to work out which black should have the red tape on it so try one at a time

Mr Handy Andy, May 2008